which two interfaces use Bidirectional Failure Detection (BFD)?

seenagape

9 years ago

When an aggregation or pre-aggregation node is configured, which two interfaces use
Bidirectional Failure Detection (BFD)? (Choose two.)

A.
Ethernet interfaces

B.
CEM interfaces

C.
BFD is not used.

D.
loopback interfaces

E.
VLAN interfaces